<b>IEEE let-through rating and UL 1449 compliance</b><br>The 'Institute of Electrical and Electronics Engineers' (IEEE) Let-Through Voltage rating is based on a test that subjects a Surge Protector to a 6,000 volt spike. The rating equates to the amount of excess voltage that reaches connected equipment. The lower the number, the better the performance of the Surge Protector is.

Underwriter's Laboratory's UL1449 surge protection safety standard uses these ratings to help users gauge performance. UL's best Transient Voltage Surge Suppressor (TVSS) Let-Through Voltage rating is "300V".<br><br><b>Data-line Protection</b><br>Protection of data lines (Ethernet, Coaxial and Phone lines) ensures complete protection of your equipment from surges. It is very important to protect your equipment from “back door” surges traveling through data lines, as they can be as damaging to your equipment as surges traveling over power lines.<br><br><b>Noise Filtering</b><br>Surge Protector attenuates EMI/RFI This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-01-239-8531, indicating validated use in U.S.

government and defense logistics supply chains.